Acts 19:2-4 NIV

2 and asked them, "Did you receive the Holy Spirit1 whena you believed?" They answered, "No, we have not even heard that there is a Holy Spirit."

References for Acts 19:2

3 So Paul asked, "Then what baptism did you receive?" "John's baptism," they replied.
4 Paul said, "John's baptism2 was a baptism of repentance. He told the people to believe in the one coming after him, that is, in Jesus."3

References for Acts 19:4